/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 Ant-Contrib project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:  
 *       "This product includes software developed by the 
 *        Ant-Contrib project (http://sourceforge.net/projects/ant-contrib)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The name Ant-Contrib must not be used to endorse or promote products 
 *    derived from this software without prior written permission. For
 *    written permission, please contact
 *    ant-contrib-developers@lists.sourceforge.net.
 *
 * 5. Products derived from this software may not be called "Ant-Contrib"
 *    nor may "Ant-Contrib" appear in their names without prior written
 *    permission of the Ant-Contrib project.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE ANT-CONTRIB PROJECT OR ITS
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 */
package net.sf.antcontrib.platform;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;

/***
 * Task definition for the <code>OsFamily</code> task.
 * This task sets the property indicated in the "property"
 * attribute with the string representing the operating
 * system family.  Possible values include "unix", "dos", "mac"
 * and "windows".
 *
 * <pre>
 *  
 * Task Declaration:
 *
 * <code>
 *   &lt;taskdef name="osfamily" classname="net.sf.antcontrib.platform.OsFamily" /&gt;
 * </code>
 *
 * Usage:
 * <code>
 *   &lt;osfamily property="propname" /&gt;
 * </code>
 *
 * Attributes:
 *   property --> The name of the property to set with the OS family name
 *
 * </pre>
 * @author <a href="mailto:mattinger@mindless.com">Matthew Inger</a>
 */
public class OsFamily extends Task
{
    private String property;

    public OsFamily()
    {
    }

    public void setProperty(String property)
    {
        this.property = property;
    }

    public void execute()
        throws BuildException
    {
        if (property == null)
            throw new BuildException("The attribute 'property' is required " +
                                     "for the OsFamily task.");

        String osName = System.getProperty("os.name").toLowerCase();
        String pathSep = System.getProperty("path.separator");
        String family = null;

        if (osName.indexOf("windows") != -1)
        {
            family = "windows";
        }
        else if (pathSep.equals(";"))
        {
            family = "dos";
        }
        else if (osName.indexOf("mac") != -1)
        {
            if (osName.endsWith("x"))
                family = "unix";
            else
                family = "mac";
        }
        else if (pathSep.equals(":"))
        {
            family = "unix";
        }

        if (family != null)
            getProject().setProperty(property, family);
    }
}

